From 141e6ebd1b1759bd5cebf092b7216b6f1c7b4c4f Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Mon, 5 Jan 2009 14:44:11 +0100 Subject: UBI: add ioctl for map operation This patch adds ioctl for the LEB map operation (as a debugging option so far). [Re-named ioctl to make it look the same as the other one and made some minor stylistic changes. Artem Bityutskiy.] Signed-off-by: Corentin Chary Signed-off-by: Artem Bityutskiy --- include/mtd/ubi-user.h | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'include') diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 2dc2eb2b8e22..758574039fca 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -133,6 +133,9 @@ #define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t) /* An atomic eraseblock change command */ #define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t) +/* Map an eraseblock, used for debugging, disabled by default */ +#define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) + /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 @@ -319,4 +322,16 @@ struct ubi_leb_change_req { int8_t padding[7]; } __attribute__ ((packed)); +/** + * struct ubi_map_req - a data structure used in map eraseblock requests. + * @lnum: logical eraseblock number to unmap + * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN) + * @padding: reserved for future, not used, has to be zeroed + */ +struct ubi_map_req { + int32_t lnum; + int8_t dtype; + int8_t padding[3]; +} __attribute__ ((packed)); + #endif /* __UBI_USER_H__ */ -- cgit From c3da23be1673be4e738aea235604b4e6cb259655 Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Mon, 5 Jan 2009 14:46:19 +0100 Subject: UBI: add ioctl for unmap operation This patch adds ioctl for the LEB unmap operation (as a debugging option so far). [Re-named ioctl to make it look the same as the other one and made some minor stylistic changes. Artem Bityutskiy.] Signed-off-by: Corentin Chary Signed-off-by: Artem Bityutskiy --- include/mtd/ubi-user.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'include') diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 758574039fca..ee2ea2e224af 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -135,7 +135,8 @@ #define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t) /* Map an eraseblock, used for debugging, disabled by default */ #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) - +/* Unmap an eraseblock, used for debugging, disabled by default */ +#define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 -- cgit From a27ce8f55dd5fddf0b8ea179cce8f399c13dc94f Mon Sep 17 00:00:00 2001 From: Corentin Chary Date: Mon, 5 Jan 2009 14:48:59 +0100 Subject: UBI: add ioctl for is_mapped operation This patch adds ioctl to check if an LEB is mapped or not (as a debugging option so far). [Re-named ioctl to make it look the same as the other one and made some minor stylistic changes. Artem Bityutskiy.] Signed-off-by: Corentin Chary Signed-off-by: Artem Bityutskiy --- include/mtd/ubi-user.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index ee2ea2e224af..5828d7879199 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -137,6 +137,8 @@ #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) /* Unmap an eraseblock, used for debugging, disabled by default */ #define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) +/* Check if an eraseblock is mapped, used for debugging, disabled by default */ +#define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t) /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 -- cgit From f7fc6f3f33703e3365c0ef9d4bf322b88cc9dae7 Mon Sep 17 00:00:00 2001 From: Artem Bityutskiy Date: Wed, 7 Jan 2009 16:10:58 +0200 Subject: UBI: improve ioctl commentaries Signed-off-by: Artem Bityutskiy --- include/mtd/ubi-user.h | 88 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 62 insertions(+), 26 deletions(-) (limited to 'include') diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 5828d7879199..82113e160a2c 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -40,37 +40,37 @@ * UBI volume creation * ~~~~~~~~~~~~~~~~~~~ * - * UBI volumes are created via the %UBI_IOCMKVOL IOCTL command of UBI character + * UBI volumes are created via the %UBI_IOCMKVOL ioctl command of UBI character * device. A &struct ubi_mkvol_req object has to be properly filled and a - * pointer to it has to be passed to the IOCTL. + * pointer to it has to be passed to the ioctl. * * UBI volume deletion * ~~~~~~~~~~~~~~~~~~~ * - * To delete a volume, the %UBI_IOCRMVOL IOCTL command of the UBI character + * To delete a volume, the %UBI_IOCRMVOL ioctl command of the UBI character * device should be used. A pointer to the 32-bit volume ID hast to be passed - * to the IOCTL. + * to the ioctl. * * UBI volume re-size * ~~~~~~~~~~~~~~~~~~ * - * To re-size a volume, the %UBI_IOCRSVOL IOCTL command of the UBI character + * To re-size a volume, the %UBI_IOCRSVOL ioctl command of the UBI character * device should be used. A &struct ubi_rsvol_req object has to be properly - * filled and a pointer to it has to be passed to the IOCTL. + * filled and a pointer to it has to be passed to the ioctl. * * UBI volumes re-name * ~~~~~~~~~~~~~~~~~~~ * * To re-name several volumes atomically at one go, the %UBI_IOCRNVOL command * of the UBI character device should be used. A &struct ubi_rnvol_req object - * has to be properly filled and a pointer to it has to be passed to the IOCTL. + * has to be properly filled and a pointer to it has to be passed to the ioctl. * * UBI volume update * ~~~~~~~~~~~~~~~~~ * - * Volume update should be done via the %UBI_IOCVOLUP IOCTL command of the + * Volume update should be done via the %UBI_IOCVOLUP ioctl command of the * corresponding UBI volume character device. A pointer to a 64-bit update - * size should be passed to the IOCTL. After this, UBI expects user to write + * size should be passed to the ioctl. After this, UBI expects user to write * this number of bytes to the volume character device. The update is finished * when the claimed number of bytes is passed. So, the volume update sequence * is something like: @@ -80,14 +80,50 @@ * write(fd, buf, image_size); * close(fd); * - * Atomic eraseblock change + * Logical eraseblock erase * ~~~~~~~~~~~~~~~~~~~~~~~~ * - * Atomic eraseblock change operation is done via the %UBI_IOCEBCH IOCTL - * command of the corresponding UBI volume character device. A pointer to - * &struct ubi_leb_change_req has to be passed to the IOCTL. Then the user is - * expected to write the requested amount of bytes. This is similar to the - * "volume update" IOCTL. + * To erase a logical eraseblock, the %UBI_IOCEBER ioctl command of the + * corresponding UBI volume character device should be used. This command + * unmaps the requested logical eraseblock, makes sure the corresponding + * physical eraseblock is successfully erased, and returns. + * + * Atomic logical eraseblock change + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * Atomic logical eraseblock change operation is called using the %UBI_IOCEBCH + * ioctl command of the corresponding UBI volume character device. A pointer to + * a &struct ubi_leb_change_req object has to be passed to the ioctl. Then the + * user is expected to write the requested amount of bytes (similarly to what + * should be done in case of the "volume update" ioctl). + * + * Logical eraseblock map + * ~~~~~~~~~~~~~~~~~~~~~ + * + * To map a logical eraseblock to a physical eraseblock, the %UBI_IOCEBMAP + * ioctl command should be used. A pointer to a &struct ubi_map_req object is + * expected to be passed. The ioctl maps the requested logical eraseblock to + * a physical eraseblock and returns. Only non-mapped logical eraseblocks can + * be mapped. If the logical eraseblock specified in the request is already + * mapped to a physical eraseblock, the ioctl fails and returns error. + * + * Logical eraseblock unmap + * ~~~~~~~~~~~~~~~~~~~~~~~~ + * + * To unmap a logical eraseblock to a physical eraseblock, the %UBI_IOCEBUNMAP + * ioctl command should be used. The ioctl unmaps the logical eraseblocks, + * schedules corresponding physical eraseblock for erasure, and returns. Unlike + * the "LEB erase" command, it does not wait for the physical eraseblock being + * erased. Note, the side effect of this is that if an unclean reboot happens + * after the unmap ioctl returns, you may find the LEB mapped again to the same + * physical eraseblock after the UBI is run again. + * + * Check if logical eraseblock is mapped + * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * To check if a logical eraseblock is mapped to a physical eraseblock, the + * %UBI_IOCEBISMAP ioctl command should be used. It returns %0 if the LEB is + * not mapped, and %1 if it is mapped. */ /* @@ -101,7 +137,7 @@ /* Maximum volume name length */ #define UBI_MAX_VOLUME_NAME 127 -/* IOCTL commands of UBI character devices */ +/* ioctl commands of UBI character devices */ #define UBI_IOC_MAGIC 'o' @@ -114,7 +150,7 @@ /* Re-name volumes */ #define UBI_IOCRNVOL _IOW(UBI_IOC_MAGIC, 3, struct ubi_rnvol_req) -/* IOCTL commands of the UBI control character device */ +/* ioctl commands of the UBI control character device */ #define UBI_CTRL_IOC_MAGIC 'o' @@ -123,21 +159,21 @@ /* Detach an MTD device */ #define UBI_IOCDET _IOW(UBI_CTRL_IOC_MAGIC, 65, int32_t) -/* IOCTL commands of UBI volume character devices */ +/* ioctl commands of UBI volume character devices */ #define UBI_VOL_IOC_MAGIC 'O' /* Start UBI volume update */ #define UBI_IOCVOLUP _IOW(UBI_VOL_IOC_MAGIC, 0, int64_t) -/* An eraseblock erasure command, used for debugging, disabled by default */ +/* LEB erasure command, used for debugging, disabled by default */ #define UBI_IOCEBER _IOW(UBI_VOL_IOC_MAGIC, 1, int32_t) -/* An atomic eraseblock change command */ +/* Atomic LEB change command */ #define UBI_IOCEBCH _IOW(UBI_VOL_IOC_MAGIC, 2, int32_t) -/* Map an eraseblock, used for debugging, disabled by default */ +/* Map LEB command */ #define UBI_IOCEBMAP _IOW(UBI_VOL_IOC_MAGIC, 3, struct ubi_map_req) -/* Unmap an eraseblock, used for debugging, disabled by default */ +/* Unmap LEB command */ #define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) -/* Check if an eraseblock is mapped, used for debugging, disabled by default */ +/* Check if LEB is mapped command */ #define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t) /* Maximum MTD device name length supported by UBI */ @@ -311,8 +347,8 @@ struct ubi_rnvol_req { } __attribute__ ((packed)); /** - * struct ubi_leb_change_req - a data structure used in atomic logical - * eraseblock change requests. + * struct ubi_leb_change_req - a data structure used in atomic LEB change + * requests. * @lnum: logical eraseblock number to change * @bytes: how many bytes will be written to the logical eraseblock * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN) @@ -326,7 +362,7 @@ struct ubi_leb_change_req { } __attribute__ ((packed)); /** - * struct ubi_map_req - a data structure used in map eraseblock requests. + * struct ubi_map_req - a data structure used in map LEB requests. * @lnum: logical eraseblock number to unmap * @dtype: data type (%UBI_LONGTERM, %UBI_SHORTTERM, %UBI_UNKNOWN) * @padding: reserved for future, not used, has to be zeroed -- cgit From e4d866cdea24543ee16ce6d07d80c513e86ba983 Mon Sep 17 00:00:00 2001 From: "JosephChan@via.com.tw" Date: Fri, 23 Jan 2009 15:37:39 +0800 Subject: [libata] pata_via: support VX855, future chips whose IDE controller use 0x0571 It supports VX855 and future chips whose IDE controller uses PCI ID 0x0571. Signed-off-by: Joseph Chan Acked-by: Tejun Heo Signed-off-by: Jeff Garzik --- include/linux/pci_ids.h | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'include') diff --git a/include/linux/pci_ids.h b/include/linux/pci_ids.h index d56ad9c21c09..febc10ed3858 100644 --- a/include/linux/pci_ids.h +++ b/include/linux/pci_ids.h @@ -1357,6 +1357,7 @@ #define PCI_DEVICE_ID_VIA_8783_0 0x3208 #define PCI_DEVICE_ID_VIA_8237 0x3227 #define PCI_DEVICE_ID_VIA_8251 0x3287 +#define PCI_DEVICE_ID_VIA_8261 0x3402 #define PCI_DEVICE_ID_VIA_8237A 0x3337 #define PCI_DEVICE_ID_VIA_8237S 0x3372 #define PCI_DEVICE_ID_VIA_SATA_EIDE 0x5324 @@ -1366,10 +1367,13 @@ #define PCI_DEVICE_ID_VIA_CX700 0x8324 #define PCI_DEVICE_ID_VIA_CX700_IDE 0x0581 #define PCI_DEVICE_ID_VIA_VX800 0x8353 +#define PCI_DEVICE_ID_VIA_VX855 0x8409 #define PCI_DEVICE_ID_VIA_8371_1 0x8391 #define PCI_DEVICE_ID_VIA_82C598_1 0x8598 #define PCI_DEVICE_ID_VIA_838X_1 0xB188 #define PCI_DEVICE_ID_VIA_83_87XX_1 0xB198 +#define PCI_DEVICE_ID_VIA_C409_IDE 0XC409 +#define PCI_DEVICE_ID_VIA_ANON 0xFFFF #define PCI_VENDOR_ID_SIEMENS 0x110A #define PCI_DEVICE_ID_SIEMENS_DSCC4 0x2102 -- cgit From abfe2d7b915c872f3a1fd203267cedebf90daa45 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 19 Jan 2009 20:54:54 +0100 Subject: Hibernation: Introduce system_entering_hibernation Introduce boolean function system_entering_hibernation() returning 'true' during the last phase of hibernation, in which devices are being put into low power states and the sleep state (for example, ACPI S4) is finally entered. Some device drivers need such a function to check if the system is in the final phase of hibernation. In particular, some SATA drivers are going to use it for blacklisting systems in which the disks should not be spun down during the last phase of hibernation (the BIOS will do that anyway). Signed-off-by: Rafael J. Wysocki Signed-off-by: Jeff Garzik --- include/linux/suspend.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/suspend.h b/include/linux/suspend.h index 2b409c44db83..c7d9bb1832ba 100644 --- a/include/linux/suspend.h +++ b/include/linux/suspend.h @@ -237,6 +237,7 @@ extern int hibernate_nvs_alloc(void); extern void hibernate_nvs_free(void); extern void hibernate_nvs_save(void); extern void hibernate_nvs_restore(void); +extern bool system_entering_hibernation(void); #else /* CONFIG_HIBERNATION */ static inline int swsusp_page_is_forbidden(struct page *p) { return 0; } static inline void swsusp_set_page_free(struct page *p) {} @@ -252,6 +253,7 @@ static inline int hibernate_nvs_alloc(void) { return 0; } static inline void hibernate_nvs_free(void) {} static inline void hibernate_nvs_save(void) {} static inline void hibernate_nvs_restore(void) {} +static inline bool system_entering_hibernation(void) { return false; } #endif /* CONFIG_HIBERNATION */ #ifdef CONFIG_PM_SLEEP -- cgit From d7b1956fed33d30c4815e848fd7a143722916868 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 19 Jan 2009 20:55:50 +0100 Subject: DMI: Introduce dmi_first_match to make the interface more flexible Some notebooks from HP have the problem that their BIOSes attempt to spin down hard drives before entering ACPI system states S4 and S5. This leads to a yo-yo effect during system power-off shutdown and the last phase of hibernation when the disk is first spun down by the kernel and then almost immediately turned on and off by the BIOS. This, in turn, may result in shortening the disk's life times. To prevent this from happening we can blacklist the affected systems using DMI information. However, only the on-board controlles should be blacklisted and their PCI slot numbers can be used for this purpose. Unfortunately the existing interface for checking DMI information of the system is not very convenient for this purpose, because to use it, we would have to define special callback functions or create a separate struct dmi_system_id table for each blacklisted system. To overcome this difficulty introduce a new function dmi_first_match() returning a pointer to the first entry in an array of struct dmi_system_id elements that matches the system DMI information. Then, we can use this pointer to access the entry's .driver_data field containing the additional information, such as the PCI slot number, allowing us to do the desired blacklisting. Signed-off-by: Rafael J. Wysocki Signed-off-by: Jeff Garzik --- include/linux/dmi.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/dmi.h b/include/linux/dmi.h index 34161907b2f8..aea23105d3ed 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -38,6 +38,7 @@ struct dmi_device { #ifdef CONFIG_DMI extern int dmi_check_system(const struct dmi_system_id *list); +const struct dmi_system_id *dmi_first_match(const struct dmi_system_id *list); extern const char * dmi_get_system_info(int field); extern const struct dmi_device * dmi_find_device(int type, const char *name, const struct dmi_device *from); -- cgit From 2a6e58d2731dcc05dafa7f976d935e0f0627fcd7 Mon Sep 17 00:00:00 2001 From: "Rafael J. Wysocki" Date: Mon, 19 Jan 2009 20:56:43 +0100 Subject: SATA: Blacklisting of systems that spin off disks during ACPI power off Introduce new libata flags ATA_FLAG_NO_POWEROFF_SPINDOWN and ATA_FLAG_NO_HIBERNATE_SPINDOWN that, if set, will prevent disks from being spun off during system power off and hibernation, respectively (to handle the hibernation case we need the new system state SYSTEM_HIBERNATE_ENTER that can be checked against by libata, in analogy with SYSTEM_POWER_OFF). Signed-off-by: Rafael J. Wysocki Signed-off-by: Jeff Garzik --- include/linux/libata.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/libata.h b/include/linux/libata.h index 2c6bd66209ff..bca3ba25f52a 100644 --- a/include/linux/libata.h +++ b/include/linux/libata.h @@ -187,6 +187,8 @@ enum { ATA_FLAG_PIO_POLLING = (1 << 9), /* use polling PIO if LLD * doesn't handle PIO interrupts */ ATA_FLAG_NCQ = (1 << 10), /* host supports NCQ */ + ATA_FLAG_NO_POWEROFF_SPINDOWN = (1 << 11), /* don't spindown before poweroff */ + ATA_FLAG_NO_HIBERNATE_SPINDOWN = (1 << 12), /* don't spindown before hibernation */ ATA_FLAG_DEBUGMSG = (1 << 13), ATA_FLAG_IGN_SIMPLEX = (1 << 15), /* ignore SIMPLEX */ ATA_FLAG_NO_IORDY = (1 << 16), /* controller lacks iordy */ -- cgit From 766fb95ba06e1bbf531d30dc05e21b2d4a0e8dd2 Mon Sep 17 00:00:00 2001 From: Sidney Amani Date: Tue, 27 Jan 2009 10:11:46 +0100 Subject: UBI: allow direct user-space I/O Introduce a new ioctl UBI_IOCSETPROP to set properties on a volume. Also add the first property: UBI_PROP_DIRECT_WRITE, this property is used to set the ability to use direct writes in userspace Signed-off-by: Sidney Amani Signed-off-by: Corentin Chary Signed-off-by: Artem Bityutskiy --- include/mtd/ubi-user.h | 34 ++++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) (limited to 'include') diff --git a/include/mtd/ubi-user.h b/include/mtd/ubi-user.h index 82113e160a2c..296efae3525e 100644 --- a/include/mtd/ubi-user.h +++ b/include/mtd/ubi-user.h @@ -124,6 +124,14 @@ * To check if a logical eraseblock is mapped to a physical eraseblock, the * %UBI_IOCEBISMAP ioctl command should be used. It returns %0 if the LEB is * not mapped, and %1 if it is mapped. + * + * Set an UBI volume property + * ~~~~~~~~~~~~~~~~~~~~~~~~~ + * + * To set an UBI volume property the %UBI_IOCSETPROP ioctl command should be + * used. A pointer to a &struct ubi_set_prop_req object is expected to be + * passed. The object describes which property should be set, and to which value + * it should be set. */ /* @@ -175,6 +183,8 @@ #define UBI_IOCEBUNMAP _IOW(UBI_VOL_IOC_MAGIC, 4, int32_t) /* Check if LEB is mapped command */ #define UBI_IOCEBISMAP _IOR(UBI_VOL_IOC_MAGIC, 5, int32_t) +/* Set an UBI volume property */ +#define UBI_IOCSETPROP _IOW(UBI_VOL_IOC_MAGIC, 6, struct ubi_set_prop_req) /* Maximum MTD device name length supported by UBI */ #define MAX_UBI_MTD_NAME_LEN 127 @@ -210,6 +220,16 @@ enum { UBI_STATIC_VOLUME = 4, }; +/* + * UBI set property ioctl constants + * + * @UBI_PROP_DIRECT_WRITE: allow / disallow user to directly write and + * erase individual eraseblocks on dynamic volumes + */ +enum { + UBI_PROP_DIRECT_WRITE = 1, +}; + /** * struct ubi_attach_req - attach MTD device request. * @ubi_num: UBI device number to create @@ -373,4 +393,18 @@ struct ubi_map_req { int8_t padding[3]; } __attribute__ ((packed)); + +/** + * struct ubi_set_prop_req - a data structure used to set an ubi volume + * property. + * @property: property to set (%UBI_PROP_DIRECT_WRITE) + * @padding: reserved for future, not used, has to be zeroed + * @value: value to set + */ +struct ubi_set_prop_req { + uint8_t property; + uint8_t padding[7]; + uint64_t value; +} __attribute__ ((packed)); + #endif /* __UBI_USER_H__ */ -- cgit From 40413dcb7b273bda681dca38e6ff0bbb3728ef11 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Thu, 22 Jan 2009 01:58:36 +0300 Subject: Fix longstanding "error: storage size of '__mod_dmi_device_table' isn't known" gcc 3.4.6 doesn't like MODULE_DEVICE_TABLE(dmi, x) expansion enough to error out. Shut it up in a most simple way. Signed-off-by: Alexey Dobriyan Signed-off-by: Linus Torvalds --- include/linux/mod_devicetable.h | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'include') diff --git a/include/linux/mod_devicetable.h b/include/linux/mod_devicetable.h index 97b91d1abb43..fde86671f48f 100644 --- a/include/linux/mod_devicetable.h +++ b/include/linux/mod_devicetable.h @@ -443,6 +443,13 @@ struct dmi_system_id { struct dmi_strmatch matches[4]; void *driver_data; }; +/* + * struct dmi_device_id appears during expansion of + * "MODULE_DEVICE_TABLE(dmi, x)". Compiler doesn't look inside it + * but this is enough for gcc 3.4.6 to error out: + * error: storage size of '__mod_dmi_device_table' isn't known + */ +#define dmi_device_id dmi_system_id #endif #define DMI_MATCH(a, b) { a, b } -- cgit From 11e76ae0f3a82bbb6c06df8af2167af8b96a0584 Mon Sep 17 00:00:00 2001 From: Inaky Perez-Gonzalez Date: Thu, 8 Jan 2009 12:52:19 -0800 Subject: USB: add kernel-doc for wusb_dev in struct usb_device Reported by Randy Dunlap from a warning on the v2.6.29 merge window. Signed-off-by: Inaky Perez-Gonzalez Cc: David Vrabel Cc: Randy Dunlap Signed-off-by: Greg Kroah-Hartman --- include/linux/usb.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/usb.h b/include/linux/usb.h index 85ee9be9361e..88079fd60235 100644 --- a/include/linux/usb.h +++ b/include/linux/usb.h @@ -418,6 +418,8 @@ struct usb_tt; * @autosuspend_disabled: autosuspend disabled by the user * @autoresume_disabled: autoresume disabled by the user * @skip_sys_resume: skip the next system resume + * @wusb_dev: if this is a Wireless USB device, link to the WUSB + * specific data for the device. * * Notes: * Usbcore drivers should not set usbdev->state directly. Instead use -- cgit From 30b23634084d95781f7611c0713cb551a0c0a152 Mon Sep 17 00:00:00 2001 From: Eric Anholt Date: Tue, 27 Jan 2009 21:19:41 -0800 Subject: drm: Rip out the racy, unused vblank signal code. Schedule a vblank signal, kill the process, and we'll go walking over freed memory. Given that no open-source userland exists using this, nor have I ever heard of a consumer, just let this code die. Signed-off-by: Eric Anholt Requested-by: Linus Torvalds Acked-by: Dave Airlie Signed-off-by: Linus Torvalds --- include/drm/drm.h | 2 +- include/drm/drmP.h | 9 --------- 2 files changed, 1 insertion(+), 10 deletions(-) (limited to 'include') diff --git a/include/drm/drm.h b/include/drm/drm.h index 32e5096554e9..8e77357334ad 100644 --- a/include/drm/drm.h +++ b/include/drm/drm.h @@ -458,7 +458,7 @@ enum drm_vblank_seq_type { _DRM_VBLANK_FLIP = 0x8000000, /**< Scheduled buffer swap should flip */ _DRM_VBLANK_NEXTONMISS = 0x10000000, /**< If missed, wait for next vblank */ _DRM_VBLANK_SECONDARY = 0x20000000, /**< Secondary display controller */ - _DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking */ + _DRM_VBLANK_SIGNAL = 0x40000000 /**< Send signal instead of blocking, unsupported */ }; #define _DRM_VBLANK_TYPES_MASK (_DRM_VBLANK_ABSOLUTE | _DRM_VBLANK_RELATIVE) diff --git a/include/drm/drmP.h b/include/drm/drmP.h index afb7858c068d..8190b9bcc2d9 100644 --- a/include/drm/drmP.h +++ b/include/drm/drmP.h @@ -545,13 +545,6 @@ struct drm_ctx_list { struct drm_file *tag; /**< associated fd private data */ }; -struct drm_vbl_sig { - struct list_head head; - unsigned int sequence; - struct siginfo info; - struct task_struct *task; -}; - /* location of GART table */ #define DRM_ATI_GART_MAIN 1 #define DRM_ATI_GART_FB 2 @@ -903,8 +896,6 @@ struct drm_device { wait_queue_head_t *vbl_queue; /**< VBLANK wait queue */ atomic_t *_vblank_count; /**< number of VBLANK interrupts (driver must alloc the right number of counters) */ spinlock_t vbl_lock; - struct list_head *vbl_sigs; /**< signal list to send on VBLANK */ - atomic_t vbl_signal_pending; /* number of signals pending on all crtcs*/ atomic_t *vblank_refcount; /* number of users of vblank interruptsper crtc */ u32 *last_vblank; /* protected by dev->vbl_lock, used */ /* for wraparound handling */ -- cgit From d8204ee2ad1c9babd7e33d4c118ec99a78a8442e Mon Sep 17 00:00:00 2001 From: Kumar Gala Date: Wed, 28 Jan 2009 00:07:20 -0600 Subject: dmi: Fix build breakage Commit d7b1956fed33d30c4815e848fd7a143722916868 ("DMI: Introduce dmi_first_match to make the interface more flexible") introduced compile errors like the following when !CONFIG_DMI drivers/ata/sata_sil.c: In function 'sil_broken_system_poweroff': drivers/ata/sata_sil.c:713: error: implicit declaration of function 'dmi_first_match' drivers/ata/sata_sil.c:713: warning: initialization makes pointer from integer without a cast We just need a dummy version of dmi_first_match() to fix this all up. Signed-off-by: Kumar Gala Signed-off-by: Linus Torvalds --- include/linux/dmi.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include') diff --git a/include/linux/dmi.h b/include/linux/dmi.h index aea23105d3ed..d741b9ceb0e0 100644 --- a/include/linux/dmi.h +++ b/include/linux/dmi.h @@ -65,6 +65,8 @@ static inline int dmi_walk(void (*decode)(const struct dmi_header *)) { return -1; } static inline bool dmi_match(enum dmi_field f, const char *str) { return false; } +static inline const struct dmi_system_id * + dmi_first_match(const struct dmi_system_id *list) { return NULL; } #endif -- cgit From dc19835df6c47ff676ad6c98722d5e529db5d74c Mon Sep 17 00:00:00 2001 From: Masami Hiramatsu Date: Thu, 29 Jan 2009 14:25:08 -0800 Subject: kprobes: fix module compilation error with CONFIG_KPROBES=n Define kprobes related data structures even if CONFIG_KPROBES is not set. This fixes compilation errors which occur if CONFIG_KPROBES is not set, in kprobe using modules. [akpm@linux-foundation.org: fix build for non-kprobes-supporting architectures] Reviewed-by: Ananth N Mavinakayanahalli Signed-off-by: Masami Hiramatsu Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/kprobes.h | 47 ++++++++++++++++++++++++++--------------------- 1 file changed, 26 insertions(+), 21 deletions(-) (limited to 'include') diff --git a/include/linux/kprobes.h b/include/linux/kprobes.h index d6ea19e314bb..32851eef48f0 100644 --- a/include/linux/kprobes.h +++ b/include/linux/kprobes.h @@ -49,6 +49,13 @@ /* Attach to insert probes on any functions which should be ignored*/ #define __kprobes __attribute__((__section__(".kprobes.text"))) notrace +#else /* CONFIG_KPROBES */ +typedef int kprobe_opcode_t; +struct arch_specific_insn { + int dummy; +}; +#define __kprobes notrace +#endif /* CONFIG_KPROBES */ struct kprobe; struct pt_regs; @@ -131,23 +138,6 @@ struct jprobe { /* For backward compatibility with old code using JPROBE_ENTRY() */ #define JPROBE_ENTRY(handler) (handler) -DECLARE_PER_CPU(struct kprobe *, current_kprobe); -DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); - -#ifdef CONFIG_KRETPROBES -extern void arch_prepare_kretprobe(struct kretprobe_instance *ri, - struct pt_regs *regs); -extern int arch_trampoline_kprobe(struct kprobe *p); -#else /* CONFIG_KRETPROBES */ -static inline void arch_prepare_kretprobe(struct kretprobe *rp, - struct pt_regs *regs) -{ -} -static inline int arch_trampoline_kprobe(struct kprobe *p) -{ - return 0; -} -#endif /* CONFIG_KRETPROBES */ /* * Function-return probe - * Note: @@ -188,6 +178,25 @@ struct kprobe_blackpoint { unsigned long range; }; +#ifdef CONFIG_KPROBES +DECLARE_PER_CPU(struct kprobe *, current_kprobe); +DECLARE_PER_CPU(struct kprobe_ctlblk, kprobe_ctlblk); + +#ifdef CONFIG_KRETPROBES +extern void arch_prepare_kretprobe(struct kretprobe_instance *ri, + struct pt_regs *regs); +extern int arch_trampoline_kprobe(struct kprobe *p); +#else /* CONFIG_KRETPROBES */ +static inline void arch_prepare_kretprobe(struct kretprobe *rp, + struct pt_regs *regs) +{ +} +static inline int arch_trampoline_kprobe(struct kprobe *p) +{ + return 0; +} +#endif /* CONFIG_KRETPROBES */ + extern struct kretprobe_blackpoint kretprobe_blacklist[]; static inline void kretprobe_assert(struct kretprobe_instance *ri, @@ -264,10 +273,6 @@ void recycle_rp_inst(struct kretprobe_instance *ri, struct hlist_head *head); #else /* CONFIG_KPROBES */ -#define __kprobes notrace -struct jprobe; -struct kretprobe; - static inline struct kprobe *get_kprobe(void *addr) { return NULL; -- cgit From e5d9a90c36e05dd080704ea58328c00f64facdc1 Mon Sep 17 00:00:00 2001 From: Ivan Kokshaysky Date: Thu, 29 Jan 2009 14:25:18 -0800 Subject: alpha: use syscall wrappers Convert OSF syscalls and add alpha specific SYSCALL_ALIAS() macro. Signed-off-by: Ivan Kokshaysky Cc: Richard Henderson Cc: Heiko Carstens Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/syscalls.h | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'include') diff --git a/include/linux/syscalls.h b/include/linux/syscalls.h index 16875f89e6a7..0eda02ff2414 100644 --- a/include/linux/syscalls.h +++ b/include/linux/syscalls.h @@ -108,9 +108,14 @@ struct old_linux_dirent; asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \ "\t.globl ." #alias "\n\t.set ." #alias ", ." #name) #else +#ifdef CONFIG_ALPHA +#define SYSCALL_ALIAS(alias, name) \ + asm ( #alias " = " #name "\n\t.globl " #alias) +#else #define SYSCALL_ALIAS(alias, name) \ asm ("\t.globl " #alias "\n\t.set " #alias ", " #name) #endif +#endif #ifdef CONFIG_HAVE_SYSCALL_WRAPPERS -- cgit From 804b3c28a4e4fa1c224571bf76edb534b9c4b1ed Mon Sep 17 00:00:00 2001 From: Paul Menage Date: Thu, 29 Jan 2009 14:25:21 -0800 Subject: cgroups: add cpu_relax() calls in css_tryget() and cgroup_clear_css_refs() css_tryget() and cgroup_clear_css_refs() contain polling loops; these loops should have cpu_relax calls in them to reduce cross-cache traffic. Signed-off-by: Paul Menage Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/cgroup.h | 1 + 1 file changed, 1 insertion(+) (limited to 'include') diff --git a/include/linux/cgroup.h b/include/linux/cgroup.h index e267e62827bb..e4e8e117d27d 100644 --- a/include/linux/cgroup.h +++ b/include/linux/cgroup.h @@ -99,6 +99,7 @@ static inline bool css_tryget(struct cgroup_subsys_state *css) while (!atomic_inc_not_zero(&css->refcnt)) { if (test_bit(CSS_REMOVED, &css->flags)) return false; + cpu_relax(); } return true; } -- cgit From 9df04e1f25effde823a600e755b51475d438f56b Mon Sep 17 00:00:00 2001 From: Davide Libenzi Date: Thu, 29 Jan 2009 14:25:26 -0800 Subject: epoll: drop max_user_instances and rely only on max_user_watches Linus suggested to put limits where the money is, and max_user_watches already does that w/out the need of max_user_instances. That has the advantage to mitigate the potential DoS while allowing pretty generous default behavior. Allowing top 4% of low memory (per user) to be allocated in epoll watches, we have: LOMEM MAX_WATCHES (per user) 512MB ~178000 1GB ~356000 2GB ~712000 A box with 512MB of lomem, will meet some challenge in hitting 180K watches, socket buffers math teaches us. No more max_user_instances limits then. Signed-off-by: Davide Libenzi Cc: Willy Tarreau Cc: Michael Kerrisk Cc: Bron Gondwana Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/sched.h | 1 - 1 file changed, 1 deletion(-) (limited to 'include') diff --git a/include/linux/sched.h b/include/linux/sched.h index 02e16d207304..5a7c76388731 100644 --- a/include/linux/sched.h +++ b/include/linux/sched.h @@ -630,7 +630,6 @@ struct user_struct { atomic_t inotify_devs; /* How many inotify devs does this user have opened? */ #endif #ifdef CONFIG_EPOLL - atomic_t epoll_devs; /* The number of epoll descriptors currently open */ atomic_t epoll_watches; /* The number of file descriptors currently watched */ #endif #ifdef CONFIG_POSIX_MQUEUE -- cgit From 5872fb94f85d2e4fdef94657bd14e1a492df9825 Mon Sep 17 00:00:00 2001 From: Randy Dunlap Date: Thu, 29 Jan 2009 16:28:02 -0800 Subject: Documentation: move DMA-mapping.txt to Doc/PCI/ Move DMA-mapping.txt to Documentation/PCI/. DMA-mapping.txt was supposed to be moved from Documentation/ to Documentation/PCI/. The 00-INDEX files in those two directories were updated, along with a few other text files, but the file itself somehow escaped being moved, so move it and update more text files and source files with its new location. Signed-off-by: Randy Dunlap Acked-by: Greg Kroah-Hartman cc: Jesse Barnes Signed-off-by: Linus Torvalds --- include/media/videobuf-dma-sg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include') diff --git a/include/media/videobuf-dma-sg.h b/include/media/videobuf-dma-sg.h index 90edd22d343c..dda47f0082e9 100644 --- a/include/media/videobuf-dma-sg.h +++ b/include/media/videobuf-dma-sg.h @@ -49,7 +49,7 @@ struct scatterlist* videobuf_pages_to_sg(struct page **pages, int nr_pages, * does memory allocation too using vmalloc_32(). * * videobuf_dma_*() - * see Documentation/DMA-mapping.txt, these functions to + * see Documentation/PCI/PCI-DMA-mapping.txt, these functions to * basically the same. The map function does also build a * scatterlist for the buffer (and unmap frees it ...) * -- cgit